Stove



H. PRELL Nov. 8, 1927. v

STOVE Filed Dec. l5, 19124` Patented Nov. 8, 1927.

UNITED STATES HENRY PRELI, OF lCHIGAGO, ILLINOIS.

STOVE.

Application led Dccember'15, 1924. Serial No. 755,971.

. This invention relates to improvements in stove structures.

The objects of this invention are to provide an improved form of fire pot for use either with gas or electricity and in which the fire pot has the vproper degree of taper so as to utilize the maximum heat from the burner and thereby produce maximum eficiency; to provide -such a fire pot and burner structure in which the sourceof heat is in close proximity to the fire pot or, in other words, so that the heating portion of the flame, as in case of the gas burner, impinges against the wall of the fire pot; and furthermore one in which the flameof the gas burner will impinge against the wall of the fire pot at approximately 90 thereto.

Other objects of this invent-ion are to provide increased radiating surface area for the fire pot and also to provide a forced draft for facilitating radiation and circulation of heat from the fire pot; and to provide a fire pot of such material as is most conducive to heat radiation. v y

Other objects of this invention consist in `providing means for insuring the products of combustion being effectively carried off from the stove so as to prevent their escape into the room; and in providing also means for preventing undue escape of the heat through the chimney, in this way conserving as much as possible the heatin the stove and thereby increasing the heat radiation.

Other objects will be apparent from the.

following description and claims when considered together with the accompanying drawings. y

Fig. 1 shows my improved stove structure in elevation with part of the outer shell broken away; Fig. 2 is a vertical sectional view; Fig. 3 is a View taken on line 3 3 of Fig. 2; Fig. 4 isa partial vertical section corresponding to Fig. 2 and illustrating a modified or multiple form of burner with a forced draft; Fig. 5 is a p'lan view of the multipleburner showing the staggered arrangement of the burner tips.

The outer drum or shelll is supported in any suitable manner upon the legs 2 and is provided with the grating top 3 up through which extends the products of combustion pipe 4 which in turn has its lower end mounted upon the upper end of the re pot. The pipe 4 is provided also with theA openings 5 of suflicient size to cause a draft or circulation of air from the room up therethrough and 1n this way facilitate the escape of the products of combustion up through the pipe so as to prevent their escape into the room. The guard 5 prevents the rise of any flame which might accidentally are through openmgs 5. The fire pot comprises the tapering body portion 6 which has cast integral therew1tl1 the radially extending vanes 7, any number of which may be employed. The taper of the portion 6 corresponds substantlaflly to that of the natural taper of the iiame of a gas burner, this arrangement serving as a means of conserving or utilizing the maxlmum degree of heat from the burner. In other words,v the flame from the burner will naturally hug the tapering portion of the fire pot. The strap 8 which extends across the bottom of the fire pot has its ends secured thereto at the points 9 and serves as a means of supporting the burner, as for instance, the gas burner 10 illustrated in the present form; it being understood, of course, that electric heating coils may be substituted in this same stove structure.

The burner 10 is provided with radiating and slightly upwardly extending tubular portions, each of which is provided with a frictionally engaging burner tip 11 so arranged that the ame through the opening 12 thereof will impinge substantially normally against the inner face of the inclined wall of the burner, or preferably will be directed slightly upwardly away from no1'- mal so as to insure upward rather than downward deflection of the flame and in this way avoid danger of the flame creeping about the lower edge of the fire pot. A plate 13 is secured across the bottom opening of the fire pot and is provided with suitable openings 14 to permit lighting of the burner.

The feed pipe 15 for the gas supply extends through the bottom portion of the stove and is connected to the inside of the burner. The fire pot is further supported by the vanes 7 -resting upon the upper ends of the legs as clearly illustrated in the drawings, these vanes being shown as resting between ridges 2a which may be provided upon the upper ends of the legs to prevent accidental displacement of the fire pot. Y,

As illustrated in Fig. 2, the burner is provided with 'p a removable cap portion' 110A which serves to close the top thereof by means of the screw bolts indicated, the lower side of ythe burner being provided with an integral closure formed as part of the casing. In the other device illustrated in Fig; 4, however, I have provided what might be termed a'multipleburner comprising the lower member 16 and the upper member 17 which are provided with the intermediate tubular member 18 for connecting the same. This tubular member rests upon the annular flange provided about the opening in the top of the burner membery 16 and engages the flange about the opening provided in the lower side of the upper member 17 as' clearly illustrated in Fig. 4. The lower side of thelower burner member 16 is closed eX- cept for the opening for the gas feed pipe 15. Both of the upper and lower burner members are provided with the radially extending tubular portions, as in the Erst form,

but it will be noted that the radiating tubes on the upper burner member 17 are somewhat shorter than those on the lower burner member, this difference in length corresponding to the. tapering form of the lire pot, and the upper and lower tubular portions are staggered, as illustrated in Fig. 5. Thee tubular 'extensions are all provided vwith the burner'tips 1l and are arranged with respect to the inner surface of the lire pot in the saine manner as already described 1n connection with the first form. The purpose of the increased number of burner tips is to increase the degree of heat to be radiated from the fire pot and in this connection I have provided a fan or blower 19 driven by the electric motor 2O and arranged at the enlarged opening of a pipe 21 which opens into the annular channel portion 22, which in turn is suitably mounted in the bottom end of the stove. This channel member opens upwardly so that air is Vdistributed about the bottom of the stove and is forced by the blower up betweeny the vanes of the lire pot and serves in this way to cause an increased circulation or distribution of the heat from the vanes of the fire pot. A plate 13 isprovided in this form as in the first form.

In both forms I have provided an apertured damper 6a which is pivotedk in the pipe 4 and is regulated in conjunction with the gas valve 14u, these two parts being connected by the lever and rod mechanism23, 24, 25 and 26, the rod 26 being connected to the arm of the gas valve. The air mixer 14b is also connected for regulation with they gas valve by means of tlie link 14, this type of yfuel regulato-r'being known as the Stanley-IIale7 although any other suitable form may b-e used. l/Vith this arrangement, the

draft up the chimneT can be regulated according to the quantity of gas and both by the same operation, with the result that the quantity of air drawn up through the fire box is increased or diminished according to whether there is more or less fuel, supplied to the burner 10. This improved damper arrangement will permit sufficient draft andv exhaust and at the same time prevent undue loss of heat up through the chimney. Thus posxible degree of heat radiation. By means of the mirror 27, it may readily lbe determined whether the stove is burning.

Thus itwill be seen that I have devised a stove of comparatively simple structure and yet possessing a high degree of efli` ciency for conservation of heatand radiation as well as circulation thereof.

Having described my invention, I claim: i

1. A stove structure, comprising an upwardly tapering body of heat radiating ma,- terial, and a flame burner arranged within the lower portion of said body and provided with a plurality of outwardly and slightly upwardly extending flame directingv tips terminating in close proximity to said body,

`whereby the flames from said burner tips will impinge against said body and naturally follow and hug the upwardly tapering form thereof.

2. A stove structure, comprising a casing, anupwardly tapering body of heat radiating material arranged within said casing in spaced relation thereto so as to provide therebetween a chamber into which is admitted the cold air to be heated, anda flame burner arranged within the lower portion of said body and provided with a plurality of outwardly extending tip portions terminating in`close proximity to said body, whereby the liames from said burner tips will impinge against said body with maximum heating effects, said body being provided with a plurality of heat radiating vanes arranged within said cold air chamber so as to increase the heat radiating surface effective upon the cold air in said chamber. f

3. A stove structure, comprising casing means, an upwardly tapering body of heat radiating material arranged within said casing means in spaced relation thereto, and a ,burner arranged within said body and car- 4. A stove structure, comprising a casing,y an upwardly tapering body of heat radiat-v ing material arranged within said casing in spaced relation thereto sol as t'o provide therebetween a chamber to which is admitted the cold air to be heated, a flame burner arranged withinthe lower portion of said izo body and provided with a plurality of outwardly extending tip ortions terminating in close proximit to said body, whereby the llames from sai burner tips will impinge against said body with maximum heating effects, said 'body being provided with a plurality of heat radiating vanes arranged'with.-

in said cold air chamber so as to increasethe heat radiating surface effective upon the cold air in said chamber, and a fanhaving operative connection with said chamber for creating a circulation of air therethrough.

` 5. In a stove structure, the combination of an upwardly tapering heat radiating body, and a pair of flame burners arranged within said body in superposed relation, each of said burners being provided with a plurality of outwardly extending flame directing tips terminating in close proximity to said body, whereby the flames from said tips will iminge against said body'with maximum heatmg effects, the tips of one burner being arranged in staggered relation relative to the tips of the other burner.

6. A stove structure, comprising a casing body, a base upon which said casing body is supported, an upwardly tapering body of heat radiating material arranged within said casing body in spaced relation thereto so as to provide an air chamber therebetween into which is admitted the cold air to vbe heated, said tapering body being provided with. a plurality of outwardly extending vanes integral with said body and supported upon said base, a burner arranged within the lower 1 end portion of said tapering body and carried thereby, and a discharge pipe for the product-s of combustion sleevedover the upper end portion of said tapering body and supported upon the vanes thereof.

In testimony whereof I hereby ailix my signature.

HENRY vPRELL. 

